Please, help.
Several years ago, I read about a metal detector, probably a military mine detector. It was supposed to be capable of recognising old blacksmith iron from modern iron. I am looking for this detector but cannot find it online. Can anyone help? Thanks.
As I have mentioned before, I use Nexus Ultima mostly to search for buried non-ferrous metals. It saves time compared to other deep search detectors. With this detector, I know that I have found something lower down and that the item is not magnetic. What else is needed? Since I don’t like to dig for nothing, I tend to check the finding with a magnetometer. After all, mistakes are “permitted” as little as 10 centimetres deep even with a TOP coin detector. I have a cheap FX3 magnetometer and sometimes I need to help it by digging two spades deep so that the meter responds. Magnetometer no errors. If silence, is good 110%!
I don’t dig for iron but if I had a detector that recognises old iron from modern one, I would dig up a medieval iron depot.